Ljubljana, Slovenia.
Temperature: 15°C Clouds: Few Clouds
Maribor, Slovenia.
Temperature: 19°C Clouds: Cloud and Visibility OK
Portoroz, Slovenia.
Temperature: 23°C Clouds: Cloud and Visibility OK

The Predjamska Castle. (source)
Jonson over at Metafilter recently put together a nice post about Slovenia’s predjamski castle, including a link to this great photoset on Flickr.
If you don’t know it, here is the wonderful story behind the castle and its besiegement.
And needless to say, BoĊĦtjan has tons of gorgeous panoramas from within its guts.
Somewhat related: A cave house in Turkey; A cave church in Germany.